Question

Solve and show work.

1. x^2 + 3x - 4 = 0


2. 2x^2 - 4x - 3 = 0


3. x(x - 2) = 4


4. 9x^2 + 12x + 4 = 0


5. x^2 + 2x = 1

Answer 1

1. x^2 + 3x - 4 =0

x^2 + 3x = 4

x + 3x = √4

4x = 2

x =2/4

x = 1/4

2. 2x^2 - 4x - 3 = 0

2x^2 - 4x = 3

2x^2 - x = 3/4

2x - x = √3/4

x = √3/4

3.x(x-2) = 4

x^2 - 2x = 4

x - 2x = √4

- x = 2

x = -2